A suspected terrorist parked a van packed with what he thought was a 1,000-pound bomb next to the Federal Reserve building in Lower Manhattan and tried to detonate it Wednesday morning before he was arrested in a terror sting operation, authorities said.

The suspect, 21-year-old Quazi Mohammad Rezwanul Ahsan Nafis, is a Bangladeshi national who came to the U.S. on a student visa in January for the specific purpose of launching a terror attack here, authorities said. He allegedly told an undercover agent last month that he hoped the attack would disrupt the presidential election, saying "You know what, this election might even stop," according to the criminal complaint against him.